Regression: AOT sinh() returns 0 — VM/JIT match Zend (ext/standard/math.c)

Problem

sinh(1) is 1.175201… on Zend/VM/JIT, but the AOT binary prints 0 (exit 0).

Probed 2026-08-03 on master (user_release_ready: no; inventory OK 6841/6841). #27018 fixed cosh NestedJIT returning 0; sinh still wrong.

Repro	Zend / VM (2026-08-03)	AOT `phpc build`
`echo round(sinh(1), 6);`	`1.175201`	`0`

php-src reference

php/php-src ext/standard/math.c — PHP_FUNCTION(sinh)

PHP implementation target

ext/standard/sinh.php + lib/JIT/Builtin/MathSinh.php — NestedJIT / thin AOT path (same class of bug as Regression: AOT cosh() returns 0 — VM/JIT match Zend (ext/standard/math.c) #27018 cosh)
PHP-in-PHP; no new C math runtime
Exercise built binary (not compile-only green)

Repro

./script/docker-exec.sh -- bash -lc '
cat > /tmp/aot_sinh.php <<'"'"'PHP'"'"'
<?php
echo round(sinh(1), 6), "\n";
PHP
php bin/vm.php /tmp/aot_sinh.php
PHP_COMPILER_HELPER_RUNTIME_O=0 php bin/compile.php -o /tmp/aot_sinh /tmp/aot_sinh.php
/tmp/aot_sinh
'

Done when

AOT binary prints 1.175201 (matches VM/Zend for round(sinh(1), 6))
Small compliance or repro guard under test/compliance/ or test/repro/
php-src-strict; no php-compiler-strict shortcut
No restamp / fake green — exercise the built binary

claim: PHP Compiler STD Lib — starting this run

TRY_FIRST: inventory OK 6855/6855; release-readiness user_release_ready=no (north-star5-fast gen-0 mismatch); VM probe OK.

Taking AOT sinh() returns 0 (#27125) — mirror #27047 exp/log NestedJIT→libc kernel pattern.

Stdlib: fix AOT sinh() NestedJIT returning 0 (#27125) (#27166)

Merged

PR: #27166 (squash 9709be8bd7)

Fix: SinhJitHelper → phpc_sinh_kernel / libc sinh(3) + NestedJIT short-circuit (peer cosh #27005 / tanh #27126).

Verified:

php bin/vm.php test/repro/issue_27125_aot_sinh.php          # 1.175201
PHP_COMPILER_HELPER_RUNTIME_O=0 ./phpc build … && /tmp/x    # 1.175201
PHP_COMPILER_HELPER_RUNTIME_O=1 ./phpc build … && /tmp/x    # 1.175201 (cache hit)
php script/bootstrap-inventory.php --check                  # OK 6859/6859

Stdlib: fix AOT acosh()/asinh()/atanh() NestedJIT returning 0 (#27058) (

Stdlib: fix AOT sinh() NestedJIT returning 0 (#27125) (#27166)

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Regression: AOT sinh() returns 0 — VM/JIT match Zend (ext/standard/math.c) #27125

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Regression: AOT sinh() returns 0 — VM/JIT match Zend (ext/standard/math.c) #27125

Description

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Problem

php-src reference

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Repro

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PurHur commented on Aug 3, 2026

PurHur commented on Aug 3, 2026

Merged

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